Home / 1,398,768,121.23-1,931,171,152.55-890,417,664.36

Finding the Fourth Proportional to 1,398,768,121.23, 1,931,171,152.55 and 890,417,664.36

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Solution

The fourth proportional to 1,398,768,121.23, 1,931,171,152.55 and 890,417,664.36 is: 1,229,330,924.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,768,121.23 : 1,931,171,152.55 = 890,417,664.36 : x
  2. Step 2: Convert to fraction form
    1,398,768,121.23/1,931,171,152.55 = 890,417,664.36/x
  3. Step 3: Cross multiply
    1,398,768,121.23x = 1,931,171,152.55 × 890,417,664.36
  4. Step 4: Simplify right side
    1,398,768,121.23x = 1,719,548,907,132,980,224
  5. Step 5: Solve for x
    x = 1,719,548,907,132,980,224/1,398,768,121.23
  6. Step 6: Final answer
    x = 1,229,330,924.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.